baber/WOPTO huggingface dataset:
Patent GB-574907-A (GB)
Title: Improvements in electro-magnetic friction devices
IPC: F16D27/00
Filed: 1943-06-22
Abstract: 574,907. Friction clutches. THORNTON, A. A. (Warner Electric Brake Manufacturing Co.). June 22, 1943, No. 10098. [Class 80 (ii)] [Also in Groups XXXIV and XXXV] A non-magnetic gap of non-uniform width is formed in the flux circuit of an electromagnetic friction clutch or other device so as to give a substantially straight magnetization curve. A brake is shown and comprises an annular electromagnet 22 rotatably mounted on a fixed ring 29 and arranged to engage frictionally an annular armature attached by flexible strips 21 to a brake drum 10. The magnet, when energized, is thus rotated to a limited extent with the brake drum and by lugs 27 thereon rocks a lever 16 mounted on a fixed pivot 15 to apply brake shoes to the drum. The magnet comprises a ring 28, 31 of U-cross-section and a friction ring 26 for engagement with the curvature ring 20. In order that the attractive force between the magnet and the armature may be a linear function of the energizing current, the magnet ring comprises two parts 28, 31 bronze-welded together at 32 and the end of the pait 28 is formed to provide a tapering air-gap 33 between it and the part 31, a shim 35 of non-magnetic material being interposed. If a truly straight-line magnetization curve is desired, the faces 36 may be suitably curved instead of being flat as shown. To prevent warping by heat of the ring 26, it comprises a series of segments of, for instance, sintered bronze, riveted at points 38 along the circumferential centre line of the ring to a sheet-metal ring 39, spot-welded to shoulders 40 of the pole-faces of the ring 28, 31. To accommodate relative radial expansion of the segments, the ring 28, 31 and the ring 39, clearance 39a is provided between the segments and one or both poles 24 and the ring 39 is formed with circumferential corrugations 41. The ring 39 may be omitted and the segments which may be of non-magnetic friction material may be bonded to the insulating material in which the magnet winding 23 is embedded.
Patent GB-739969-A (GB)
Title: Improvements in or relating to electrical bimetallic indicating instruments
IPC: G01R17/00
Filed: 1954-04-07
Abstract: 739,969. Thermal - responsive measuring instruments. DEUTA - WERKE VORM. DEUTSCHE TACHOMETERWERKE GES. April 7, 1954 [April 23, 1953], No. 10150/54. Class 37. [Also in Group XXXVIII] In a thermal-responsive instrument the current - actuated bimetallic spiral 3 is coneshaped and the oppositely - wound ambient temperature compensating bimetallic spiral 7 may also be coneshaped. A screen 11 mounted on the instrument shaft 2 or on the casing 1 heat insulates spiral 7 from spiral 3. The Specification discusses cone design requirements such as precise shape, convolution spacing and time constant. To produce desired damping and resistance against mechanical jolting, the cone height may be approximately equal to the cone base diameter. The invention is applied in the Figure as a dashboard instrument for indicating speed, petrol content, oil pressure, &c. Normally the rotary selector switch 12 stands at the speed indicator position I/VI as shown, whereby spiral 3 deflects pointer 9 responsively to e.m.f. developed by vehicle-shaft driven generator 6. As desired switch 12 may be turned to other positions as follows, in association with battery 16 and instrument pointer 9 indicates the selected quantity or condition; (II) with one or more resistors 15 in circuit dependently on petrol content at 13 ; (III) to short circuit resistor 19 and measure charging current of battery 16 from generator 17; (IV) for indicating oil pressure as carbon pile resistor 20 responds to oil pressure finger 21 ; (V) short circuit of resistor 22 to indicate that current is flowing through signal lamp 23. It is also stated that the instrument may be arranged to indicate cooling water temperature.
Patent GB-834800-A (GB)
Title: Turbine-driven fans
Inventor: HOWELL ALUN RAYMOND
IPC: B64C29/00
Filed: 1955-04-06
Abstract: 834,800. Turbine-driven fans. MINISTER OF SUPPLY. March 28, 1956 [April 6, 1955], No. 10159/55. Classes 110 (1) and 110 (3). [Also in Group XXXIII] A variable output constant speed turbine driven fan comprises a rotor 21 carrying a row of axialflow fan rotor blades 23 and a row of axial-flow turbine rotor blades 24 mounted radially outside the flow rotor blades, and a row of angularly adjustable, axial-flow, fan-stator blades 33 arranged in series - flow relationship with the fan-rotor-blades to vary the fan output. The angularly adjustable fan-stator blades are operatively linked to the variable area nozzle 41, 38 of the turbine so that for given conditions of temperature and pressure at the turbine inlet the rotor speed is substantially constant over a range of output of the fan. The configuration of the turbine and fan blades is illustrated in Figs. 4, 5 (not shown), respectively. Specification 811,840 is referred to.
Patent GB-661595-A (GB)
Title: Improvements in or relating to gas driven engines of the sliding vane type
IPC: F02B53/00
Filed: 1949-04-14
Abstract: 661,595. Rotary engines. RHODES, C. J., a nd RHODES, A. April 14, 1949. No. 10221/49. Class 110(ii). An internal-combustion engine of the sliding-vane type is provided with combustion air in measured quantities at a pressure dependent on the pressure of the exhaust gases. Air is supplied by a centrifugal blower 37 driven by a multi-stage, exhaust-gas driven turbine 9, or driven by a motor, which is controlled in accordance with the setting of the main-engine fuel valve. Compressed air entering the combustion chamber 13 is controlled by a rotary valve having radial passages 12 co-acting with ports in a rotary sleeve 12a, valve and sleeve rotating in opposite directions. Air is drawn into the blower from the atmosphere by the blower 37 and passes through a duct 7 into the duct 5a and is carried by one of the lower vanes into the valve 12. Fuel is injected into the chamber 13 and the combustion gases discharged through a port 6c on to the upper vanes to drive the rotor 23. The exhaust gases pass through an outlet 6b to nozzles 28a and drive the turbo-fan unit 9. The fuel valve is controlled by a governor 21 acting through a slide block 38, links 40, 42 and cams 22 on the valve driving wheel. The block 39 may be coupled by linkage 44 to a manual control. Water for cooling is contained in a space 3a and an oil sump 3b is provided An insulating liner 14 is placed around the combustion chamber.
Patent GB-300620-A (GB)
Title: Improvements in loud-speaking telephones and like electro-acoustic devices
IPC: H04R11/00
Filed: 1928-04-05
Abstract: 300,620. KitsÚe, I., and Law, D. C. Nov. 18, 1927, [Convention date]. Loud-speakers ; magnetic instruments.-The permanent magnet 1 of a loud-speaker is provided with a magnetic shunt or keeper 2 made of laminated soft iron or the like and arranged in parallel with the poles 9. The diaphragm or like member is connected by a rod 5 with the pivoted armature 3. Current from a wireless receiver or the like is applied to a fixed coil 10 wound either round the shunt 2, Fig. 2, or round the armature, Fig. 1 (not shown). In addition two further coils 4, 11 surrounding the armature 3 and shunt 4 respectively, are connected in series to form a closed circuit. The wires forming adjacent coils as at 10, 11 are twisted together or otherwise intimately related to one another.
Patent GB-791340-A (GB)
Title: Improvements in or relating to speed-responsive governors for internal combustion engines
IPC: F02D1/00
Filed: 1955-04-12
Abstract: 791,340. Speed governors. LINER CON. CRETE MACHINERY CO., Ltd., and SKELTON, J. L. March 13, 1956 [April 12, 1955], No. 10397/55. Class 57. In a speed governor arrangement for internal combustion engines the fuel control governor arm 12 acts in one direction against the free end of the spring-loaded fuel pump rack 17 and is acted upon in the opposite direction by a tension spring 10 connected at one end to the arm 12 and at the other end to a control lever 5 adjustable at will to vary the governor loading. The lever 5 is pivotally movable between adjustable limit stops 7, 8 and the spring 10 is secured to a bracket 11 connected to the arm 12 by an adjustable bolt 14 that abuts an extension 16 of the rack 17 loaded by springs 19, 21.
Patent GB-1416804-A (GB)
Title: Preparation of substituted cyclopropane carboxylic acids
IPC: C07C67/00
Filed: 1973-03-05
Abstract: 1416804 Preparation of substituted cyclopropane carboxylic acids SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV 5 March 1973 10531/73 Heading C2C Cis-substituted cyclopropane carboxylic acids are prepared by reacting an alkenylmagnesium compound with a cyclopropenyl compound at elevated temperature in the presence of tetrahydrofuran, and converting the reaction product into a substituted cyclopropane carboxylic acid. The examples describe the preparation of cis-chrysanthemic acid and cis-isobutenyl cyclopropane carboxylic acid.
Patent GB-973011-A (GB)
Title: Device for the separation of moisture drops from a gas-stream
IPC: B01D45/10
Filed: 1962-03-20
Abstract: 973,011. Separating liquid particles from gases. BROWN, BOVERI & CO. Ltd. March 20, 1962 [May 18, 1961], No. 10611/62. Heading B1T. Apparatus for separating moisture from a gas stream, e.g. wet steam, comprises a set of laterally spaced vertical smooth imperforate plates 9, Fig. 1, downstream a set of similarly disposed corrugated plates 3 ; the gas flow being between the plates of each set which are substantially parallel to the general direction of flow. The corrugated plates are separated by a distance equal to twice the depth of corrugation and are supported on a base plate 4 having apertures 5 through which collected water passes to a drain chamber 6. The plane plates 9 have inclined grooves 11 on both sides 'and are supported on a base plate 10 having openings through which water passes to a collecting chamber 15 and a drain 16.
Patent GB-106595-A (GB)
IPC: F16L23/20
Abstract: 106,595. Hall, J. & E., and Jago, A. Feb. 7, 1917. Butt joints.-In the circulatory system of an ammonia refrigerating-machine, a tight joint is effected between adjacent sections of piping A, 13 by means of a ring C of soft iron, which is located between the opposed faces or edges of the pipe ends and is compressed by drawing the sections together by means of bolts passing through holes d, e in flanges D, E screwed on to the pipe ends, one of the flanges D having an unthreaded portion d<2> covering the ring C.
Patent GB-1436276-A (GB)
Title: Toy gun and gunfight game
IPC: A63F9/02
Filed: 1974-03-11
Abstract: 1436276 Gun game IDEAL TOY CORP 11 March 1974 [6 July 1973] 10694/74 Headings A6H and A6S A toy gun assembly comprises means 82, 104 in a housing for discharging a projectile 16, a target 22 operatively engaged with and removable from the housing and means in the housing responsive to an impact against the target. The impact disables the gun. The gun may have a magazine as in Specification 1391576. Two gun assemblies are pivoted on arms 40 ,pivoted at points 42 on a board 14. A ball 16 inserted through an opening 68 falls on to a spring clip 104. The trigger 82 is then actuated against a spring 88 to force the ball through the clip which causes the ball to be suddenly projected down a shoot 100 and out of the exit 88 between the legs of the target figure 22. If a target is hit, it slips from a support 142 and releases a lever 132 which closes the ball exit and projects the target away. A fulcrum point 143 on the target renders the target more susceptible to shots on the right of the target. Obstacles 152 on the board enable players to "hide" their targets. The obstacles are secured by bayonet fixings.
Patent GB-437241-A (GB)
Title: Method of and apparatus for attaining improved felting of the fibres in paper pulp on the wet part of paper and board making machines
IPC: D21F1/18
Filed: 1935-04-06
Abstract: 437,241. Shaking-appliances of papermaking machines. HOLGERSSON, S. P. H. E., Hammarby, Storvik, and TIBELL, W. A. E., M÷lndal, both in Sweden. April 6, 1935, No. 10741. [Class 96] Felting the fibres of paper pulp at the wet end of paper or board-making machines is aided by vibrating at right angles to the pulp flow, submerged bands, wires, slices, or the apron &c. using alternating current vibrators at 4000-6000 or more vibrations per minute. A band 4, Fig. 1, e.g. 1 metre wide, between a metal apron 2 and the wire-cloth 1 is stretched between springs 5 and shaken by a vibrator 6. The wire-cloth, breast roll, table roll, lips of the flow-box or combinations of these may also be vibrated. The shaken parts may have a smooth surface or be irregular, grooved or carry agitators. The wire-cloth may be shaken by the breast roll, table rolls, or by rolls between which it passes. Shaken rolls may be rubber-covered and spring pressure may be applied directly or through thrust bearings to their shafts. The shell 20, Fig. 6, only of a roller may be shaken and connected by sliding, rolling or spring supports 22 with its core 21 which may be stationary or rotate, an alternating current vibrator 19 being connected to blocks 24 on springs 25.
Patent GB-368559-A (GB)
Title: Improved manufacture of fertilisers
IPC: C05B1/02
Filed: 1931-04-13
Abstract: A dry and pulverulent fertilizer having a base of ammonium magnesium phosphate is produced by treating natural tricalcium phosphate with a mixture of phosphoric and sulphuric acids to convert the natural phosphate into a mixture of soluble monocalcium phosphate and calcium sulphate, adding triammonium phosphate in a quantity approximately double the quantity of tricalcium phosphate present in the natural phosphate and neutralizing the solution with calcined magnesia.  The mixture of sulphuric and phosphoric acids contains substantially 74 per cent of phosphoric acid at substantially 30 DEG  B<\>ae and substantially 26 per cent of sulphuric acid at substantially 60 DEG B<\>ae by weight. The process may be carried out in the apparatus shown.  The phosphoric and sulphuric acids are added from tanks R<2>, R<1> to a <PICT:0368559/III/1> mixer B to which is also added the natural phosphate from a hopper S.  After the reaction the triammonium phosphate is added and the liquid led to a mixer conveyer M where it is mixed with the calcined magnesia from a hopper T.
Patent GB-615408-A (GB)
Title: Improvements in intravaginal packs and their manufacture
IPC: A61F13/20
Filed: 1944-06-05
Abstract: 615,408. Tampons. POPPER, O. June 5, 1944. No. 10783. Convention date, July 30, 1943. [Class 81 (ii)] A vaginal pack of rod shape is formed from a sheet of absorbent material folded along lines parallel to the length of the material into a series of parallel and successively reversed pleats, the pack being compressed transversely to its length and to said lines of folding, which lines are preserved in the final pack. For its manufacture, a sheet 27 of cotton wool, disposed between plates 12, 13, the upper of which is pivoted at 14, is pressed by a stepped blade 23, firstly to form corrugations against the face 26 of member 19 and then into a conical passage 20 formed in the member. The doubled pleated sheet is finally pressed into a die 17, and blade 23 retracted, backward movement of the tampon being prevented by annular grooves 33 formed in the die bore. After the application of heat to set the tampon, it is ejected from the bore by a plunger.
Patent GB-1260755-A (GB)
Title: Production or aromatic carboxylic acids
IPC: C07C51/00
Filed: 1969-02-28
Abstract: 1,260,755. Production of aromatic carboxylic acids. LUMMUS CO. 28 Feb., 1969 [18 March, 1968], No. 10792/69. Heading C2C. A process for the production of an aromatic carboxylic.acid by the hydrolysis of an aromatic nitrile comprises (a) maintaining an aqueous slurry of the nitrile in contact with a catalyst which is an alkali metal or alkaline earth metal hydroxide, carbonate or salt of an aromatic carboxylic acid or ammonium salt of an aromatic carboxylic acid at a temperature in the range 300-600‹ F. for a period sufficient to hydrolyse a substantial portion of the nitrile, (b) stripping ammonia from the hydrolysate, by countercurrently contacting the hydrolysate with steam and (c) cooling the stripped hydrolysate to a temperature at which the aromatic carboxylic acid separates out. In the examples terephthalic acid is prepared from terephthalonitrile.
Patent GB-198312-A (GB)
Title: Improvements in gas grilling apparatus
IPC: A47J37/06
Filed: 1922-02-27
Abstract: 198,312. Helps, G. Feb. 27, 1922. Grilling - stoves; incandescent gas fires.- A gas griller attached to the hot-plate of a st o ve comprises a burner r carried by the hot-plate and substantially horizontal radiants s into which the flames project. The radiants are perforated on the underside and are supported at one end on the burner nozzles t and at the other by flanges resting on a rack q. In the case of separate grilling apparatus, a horizontal frame supported on legs is used, the burner being attached to or forming part of the frame.
Patent GB-1247432-A (GB)
Title: Improvements in electric charge meters
Inventor: SANDBERG KARL LENNART
IPC: G01R29/24
Filed: 1969-02-28
Abstract: 1,247,432. Selective signalling. ALLMANNA SVENSKA ELEKTRISKA AB. 28 Feb., 1969 [29 Feb., 1968], No. 10821/69. Heading G4H. The state of charge of a battery is determined by counting 1 pulses, either additively or subtractively, at a frequency proportional to the current 2 flowing through the battery, the pulses being produced by a follow-up loop in which a magnetic field produced by the battery current is opposed by a field produced by pulses from a shaper 7, the difference between the fields being detected by a hall plate 4 whose output voltage controls a pulse producing oscillator 6 which also controls the pulse shaper. The charge/count characteristic of the circuit is linearized by modifying the charge content of the pulses produced by the shaper 7 in accordance with the direction and magnitude of the battery current.
Patent GB-955251-A (GB)
Title: Method of forming cylindrical armatures
Inventor: BUTTON STANLEY GORDON
IPC: H02K3/26
Filed: 1960-03-28
Abstract: 955,251. Printed circuits. JOSEPH LUCAS (INDUSTRIES) Ltd. March 17, 1961 [March 28, 1960], No. 10823/60. Heading H1R. [Also in Division H2] A cylindrical armature for a dynamo-electric machine is formed by securing a longer sheet of copper to a sheet of flexible insulating material and forming conductors 7 on it by known printing techniques. The sheet is folded with conductors outside along line 8 such that tongues 7a are adjacent to the free ends of conductors 7, and after bending into cylindrical form and securing to a core (not shown) adjacent tongues and conductors are connected by soldering.
Patent GB-1221491-A (GB)
Title: Instant coffee product and a process for its manufacture
IPC: A23F5/14
Filed: 1968-03-06
Abstract: 1,221,491. Instant coffee product. GENERAL FOODS CORP. 6 March, 1968 [8 March, 1967; 31 July, 1967 (2); 16 Nov., 1967], No. 10910/68. Heading A2B. Roast coffee is ground to particles of colloidal size, having an average particle size of no more than 50Á, and these particles are formed into an aqueous suspension, of which the pH is adjusted to a value not exceeding 5.2, for example by the addition of acid coffee extract substances or physiologically tolerable acids, after which the suspension is dried. The product may be incorporated with soluble coffee extracts to give an instant coffee. In one form, the suspension is incorporated with a solution of the extract, and in another form, the suspension is employed as the extracting medium, followed by the pH adjustment and drying steps.
Patent GB-911546-A (GB)
Title: Thermal electric alternator
IPC: H02N11/00
Filed: 1959-03-31
Abstract: 911,546. Inverting; automatic voltage control systems. DURANT, L. A. March 31, 1959, No. 10911/59. Classes 38 (2) and 38 (4). [Also in Groups XXXVI and XL (a)] Apparatus for converting thermal energy into A.C. electrical energy comprises a pair of electrically common emissive electrodes 1, a pair of independent control electrodes 3 and a pair of independent collector electrodes 2, the arrangement being such that a substantially equal difference of potential is produced across each pair of emissive and collector electrodes when the former are heated. The apparatus further includes a step-up transformer, having a secondary winding 15 connected to an electric load 13 and a primary winding 14 having its outer terminals connected to the collector electrodes and a mid-tap connected to both emissive electrodes. There is also provided an exciter inductance 19 having a mid-tap connected to the emissive electrodes, and outer terminals connected to the control electrodes through rectifiers 20, whereby a negative potential is alternately applied to each of the control electrodes with respect to the emissive electrodes when oscillating means 21, for inductively coupling alternating current to inductance 19, is energized, so that alternate electric pulses are produced in. the windings of the transformer when the emissive elements are heated. After applying a starting potential to the oscillating means 21, the apparatus may be self-excited by connecting a tertiary winding in the step-up transformer to the oscillating means. The apparatus may also include an electronic differential amplifier and voltage reference unit connected to the secondary winding 15 of the transformer through a third rectifier means and in series with the mid-tap connection of the inductance 19, and adapted to respond to a rectified sample of the A.C. output voltage and provide a bias potential in the mid-tap connection in proportion to the potential across the load and regulate the negative potential applied to the control electrodes so as to stabilize the alternating energy in the load 13 when the latter or the heating of the emissive electrodes is varied.
Patent GB-735920-A (GB)
Title: Improvements in or relating to foldable cartons
IPC: B65D5/10
Filed: 1953-04-21
Abstract: 735,920. Cartons. COLEMAN, Ltd., C., and COLEMAN, R. S. April 21, 1954 [April 21, 1953], No. 10913/53. Class 18. A carton is formed from the blank shown by folding it to tubular form, interlocking the bottom flaps and folding the top flange inwardly, the creases 13, 15, 16, 18 causing the flange to remain in its inward closing position. A cord 21 passed through holes 20, provides a handle and draws the closure' together.
Patent GB-358529-A (GB)
Title: Improvements in and relating to the production of phosphate fertilisers
IPC: C05B1/02
Filed: 1930-04-07
Abstract: In a process of preparing phosphatic fertilizers wherein streams of acid, such as phosphoric or sulphuric acid, and finely ground phosphatic material are mixed, and the mixture is passed to a confined receiving zone, the time of charging is decreased as the reactivity of the mass, as defined by the temperature and concentration of the acid, and by the temperature and degree of fineness of the dust, increases.  Conditions are also so arranged that volatile components of the mass are retained.  Subject to these conditions, the process may be carried out in a manner described in Specification 357,508, that is, the mixture may be passed under pressure to a rotating autoclave, partially evacuated and heated to say 150 DEG  F.  In examples, the time of charging a five ton mass varies from three minutes to less than fifty-four seconds, dependent on the temperature (from 90-125 DEG  F.) and concentration (from 52-56 DEG  B<\>ae) of the acid; and on the degree of fineness of the rock (80-100 mesh).  The material is digested in the autoclave under autogenous or applied pressure, which is subsequently released intermittently.  The mass is crystallized, preferably by cooling, and then dried by heating under reduced pressure.